Car Battery Too high voltage?

  • Thread starter Thread starter Gheremy H
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Gheremy H

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Um, while driving my car, i was watchin the voltage gauge and it goes crazy between 13 and 16 volts and after a while my speedometer hud turns off.. Then bak on after about 2 seconds.. When im standing still and not moving, the voltage reads over 14 volts at about 15 until i start moving and then it goes up and down until the car speedomter hud resets again and it does repeatedly.. What is the problem? I have a 2001 Ford Focus Zx3.. I knw the car battery is suppost to be steady at about 13.5 or so.. but this is going to 16 and beyond at some points and the car keeps reseting when it gets that high.. And, my battery light is on.. Could it be a bad alternator?
 
If it's going above 15 volts at any time, either your battery is really bad, or your regulator is bad.
Check the battery voltage with the car off. You can buy a digital multimeter for about $20 these days.
 
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